This is a 147-piece set of interlocking plastic blocks from Great Blocks, compatible with LEGO brand. The blocks are self-locking bricks made of ABS plastic and come in a polybag packaging. The set includes 6 different blue police force-themed models, such as cars, trucks, helicopters, and tanks, among others. It is recommended for ages 3+ and has certification for CE. The set is suitable for both genders and can be a great birthday gift.